GB2465681B - Digital circuit arrangements for ambient noise-reduction - Google Patents
Digital circuit arrangements for ambient noise-reductionInfo
- Publication number
- GB2465681B GB2465681B GB0920789A GB0920789A GB2465681B GB 2465681 B GB2465681 B GB 2465681B GB 0920789 A GB0920789 A GB 0920789A GB 0920789 A GB0920789 A GB 0920789A GB 2465681 B GB2465681 B GB 2465681B
- Authority
- GB
- United Kingdom
- Prior art keywords
- reduction
- digital circuit
- ambient noise
- circuit arrangements
- arrangements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17853—Methods, e.g. algorithms; Devices of the filter
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1015105A GB2470681B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB1015103A GB2470680B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB0920789A GB2465681B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB1015106A GB2470682B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB1015100A GB2470679B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0804508A GB2446966B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB0920789A GB2465681B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0920789D0 GB0920789D0 (en) | 2010-01-13 |
GB2465681A GB2465681A (en) | 2010-06-02 |
GB2465681B true GB2465681B (en) | 2010-12-15 |
Family
ID=41572772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0920789A Active GB2465681B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2465681B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0578212A2 (en) * | 1992-07-07 | 1994-01-12 | Sharp Kabushiki Kaisha | Active control apparatus with an adaptive digital filter |
WO1994007212A1 (en) * | 1992-09-21 | 1994-03-31 | Noise Cancellation Technologies, Inc. | Sampled-data filter with low delay |
DE19526098C1 (en) * | 1995-07-18 | 1996-09-12 | Stn Atlas Elektronik Gmbh | Active sound-dampening equipment |
EP1074971A2 (en) * | 1995-07-03 | 2001-02-07 | National Research Council Of Canada | Digital feed-forward active noise control system |
WO2003003789A2 (en) * | 2001-06-26 | 2003-01-09 | Sonic Innovations, Inc. | Method and apparatus for minimizing latency in digital signal processing systems |
-
2006
- 2006-04-12 GB GB0920789A patent/GB2465681B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0578212A2 (en) * | 1992-07-07 | 1994-01-12 | Sharp Kabushiki Kaisha | Active control apparatus with an adaptive digital filter |
WO1994007212A1 (en) * | 1992-09-21 | 1994-03-31 | Noise Cancellation Technologies, Inc. | Sampled-data filter with low delay |
EP1074971A2 (en) * | 1995-07-03 | 2001-02-07 | National Research Council Of Canada | Digital feed-forward active noise control system |
DE19526098C1 (en) * | 1995-07-18 | 1996-09-12 | Stn Atlas Elektronik Gmbh | Active sound-dampening equipment |
WO2003003789A2 (en) * | 2001-06-26 | 2003-01-09 | Sonic Innovations, Inc. | Method and apparatus for minimizing latency in digital signal processing systems |
Non-Patent Citations (2)
Title |
---|
Lin, L. and Aboulnasr, T., "Adaptive Signal Processing in Subbands Using Sigma-Delta Modulation Technique", IEEE International Conference of Acoustics, Speech and Signal Processing, 1994, Vol. 3, pp 169-172 * |
Minogue et al, "Adaptively Cancelling Server Fan Noise: Principles and Experiments with a Short Duct and the AD73522 dspConverter", Analog Dialogue magazine, 2000, Vol. 34, pp 10-15 * |
Also Published As
Publication number | Publication date |
---|---|
GB2465681A (en) | 2010-06-02 |
GB0920789D0 (en) | 2010-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20150820 AND 20150826 |